D155AX - 小松製作所...D155AX-6 D155AX-6 C RAWLER D OZER CRAWLER DOZER Torque converter Engine...

12
HORSEPOWER Gross: 268 kW 360 HP @ 1900 rpm Net: 264 kW 354 HP @ 1900 rpm OPERATING WEIGHT 39500 kg 87,100 lb Photo may include optional equipment. D155AX-6 CRAWLER DOZER D 155AX

Transcript of D155AX - 小松製作所...D155AX-6 D155AX-6 C RAWLER D OZER CRAWLER DOZER Torque converter Engine...

Variable multi-shank ripper● Additional weight (including hydraulic control unit): 3760 kg 8,290 lb● Beam length: 2320 mm 7'7"● Hydraulically-controlled parallelogram-type ripper with three shanks.

Digging angle infinitely adjustable.Standard digging angle*: 49°

● Maximum digging depth: 900 mm 2'11"● Maximum lift above ground: 950 mm 3'1"

Variable giant ripper● Additional weight (including hydraulic control unit): 2440 kg 5,380 lb ● Beam length: 1400 mm 4'7" ● Hydraulically-controlled parallelogram-type ripper with one shank.

Digging angle infinitely adjustable.Standard digging angle*: 49°

● Maximum digging depth: 1240 mm 4'1" ● Maximum lift above ground: 950 mm 3'1"

* Measured with ripper point on ground and shank vertical.

Shoes

Shoes (optional) Additional weight Ground contact area

560 mm 22" single-grouser shoes 0 kg 0 lb 36680 cm2 5,685 in2

610 mm 24" single-grouser shoes +200 kg +440 lb 39955 cm2 6,193 in2

660 mm 26" single-grouser shoes +410 kg +905 lb 43230 cm2 6,700 in2

710 mm 28" single-grouser shoes +620 kg +1,370 lb 46505 cm2 7,208 in2

560 mm 22" extreme service shoes +460 kg 1,015 lb 36680 cm2 5,685 in2

610 mm 24"extreme service shoes +700 kg +1,545 lb 39955 cm2 6,193 in2

660 mm 26"extreme service shoes +940 kg +2,070 lb 43230 cm2 6,700 in2

Other● Air conditioner ● Cab heater and defroster● Engine side cover● Locks, filler caps and covers● Rear view monitoring system● Rigid drawbar● Tool kit

www.Komatsu.com Printed in Japan 201302 IP.AD

CEN00103-04 Materials and specifications are subject to change without notice.is a trademark of Komatsu Ltd. Japan.

HORSEPOWERGross: 268 kW 360 HP @ 1900 rpm

Net: 264 kW 354 HP @ 1900 rpm

OPERATING WEIGHT39500 kg 87,100 lb

Photo may include optional equipment.

● Air cleaner, double element with dustindicator

● Alternator, 50 ampere● Backup alarm● Batteries, 2 x 12V 170 Ah● Blower cooling fan● Color monitor● Decelerator pedal● Fenders● Horn, warning● Hydraulics for dozer● Hydrostatic steering (HSS) system

● Lighting system (includes 2 front, 1 rear)● Muffler with rain cap● Palm lever steering control● Radiator with reserve tank● Rear cover● Starting motor, 11kW/24V● Suspension seat● Track roller guard, end sections● Track shoe assembly

– Sealed and lubricated track● Underguards, oil pan and transmission● 560 mm 22" single grouser shoe

ROPS cab● Additional weight: 700 kg 1,545 lb● All-weather, enclosed pressurized cab● Dimensions:

—Length: 1735 mm 5'8"—Width: 1755 mm 5'9"—Height from floor: 1635 mm 5'4"

● Meets ISO 3471, SAE J/ISO 3471 ROPSstandards, and ISO 3449 FOPSstandard.

STANDARD EQUIPMENT FOR BASE MACHINE

OPTIONAL EQUIPMENT

D155AX-6

CR

AW

LE

RD

OZ

ER

D155AX

2 3

WALK-AROUND

D155AX-6

HORSEPOWERGross: 268 kW 360 HP @ 1900 rpm

Net: 264 kW 354 HP @ 1900 rpm

OPERATING WEIGHT39500 kg 87,100 lb

BLADE CAPACITYSIGMADOZER: 9.4 m3 12.3 yd3

CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

PCCS (Palm Command Control System) ● Electronic controlled PCCS travel control● Electronic controlled PCCS blade/ripper control● Fuel control dial● Automatic/manual gearshift selectable mode● Gearshift pattern preset function● ECMV controlled transmissionSee page 7.

Gull-wing engine side covers for easy and efficient engine servicing See page 9.

Photos may include optional equipment.

New integrated ROPS cab includes:● Large quiet operator environment● Comfortable ride with new cab damper● Excellent visibility without ROPS post● High capacity air conditioning system (optional)● Pressurized cab (optional)● Adjustable armrests and suspension seatSee page 8.

Large TFT LCD monitor● Easy-to-see and use 7" large multi-color

monitor.● Can be displayed in 10 languages for global

support.TFT : Thin Film TransistorLCD : Liquid Crystal Display

See page 8.Hydraulic drive radiator coolingfan controlled automatically, reducesfuel consumption and operating noiselevels. See page 6.

Newly designed ripperoffers excellent ripper visibility.See page 8.

Modular power train for increased serviceability and durability. Forward mounted pivot shafts isolate final drives from blade loads.See page 9.

Blade tilt lines completely protected.

High-rigidity, simple hull frameand monocoque track frame with pivotshaft for greater reliability.See page 9.Wet disc brakes require less maintenance.

K-Bogie undercarriage systemimproves traction, component durability, andoperator comfort. See page 9.

Increased-track length, seven roller undercarriage ensures outstanding grading ability and stability.

Extra-low machine profileprovides excellent machine balance and low center of gravity.

SAA6D140E-5 turbocharged after-cooleddiesel engine provides an output of 264 kW 354 HPwith excellent productivity. EPA Tier 3 and EU stage 3Aemissions certified. See page 6.

HSS (Hydrostatic Steering System) provides smooth, quick, and powerful control in various ground conditions.

Automatic transmission with lockup torqueconverter increases speed and power to improve fuelconsumption and productivity. See page 5.

Innovative SIGMADOZER reduces diggingresistance and demonstrates smooth material roll upto increase blade load. Blade capacity 9.4 m3 12.3 yd3. See page 4.

OUTSTANDING PRODUCTIVITY &FUEL ECONOMY

2 3

WALK-AROUND

D155AX-6

HORSEPOWERGross: 268 kW 360 HP @ 1900 rpm

Net: 264 kW 354 HP @ 1900 rpm

OPERATING WEIGHT39500 kg 87,100 lb

BLADE CAPACITYSIGMADOZER: 9.4 m3 12.3 yd3

CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

PCCS (Palm Command Control System) ● Electronic controlled PCCS travel control● Electronic controlled PCCS blade/ripper control● Fuel control dial● Automatic/manual gearshift selectable mode● Gearshift pattern preset function● ECMV controlled transmissionSee page 7.

Gull-wing engine side covers for easy and efficient engine servicing See page 9.

Photos may include optional equipment.

New integrated ROPS cab includes:● Large quiet operator environment● Comfortable ride with new cab damper● Excellent visibility without ROPS post● High capacity air conditioning system (optional)● Pressurized cab (optional)● Adjustable armrests and suspension seatSee page 8.

Large TFT LCD monitor● Easy-to-see and use 7" large multi-color

monitor.● Can be displayed in 10 languages for global

support.TFT : Thin Film TransistorLCD : Liquid Crystal Display

See page 8.Hydraulic drive radiator coolingfan controlled automatically, reducesfuel consumption and operating noiselevels. See page 6.

Newly designed ripperoffers excellent ripper visibility.See page 8.

Modular power train for increased serviceability and durability. Forward mounted pivot shafts isolate final drives from blade loads.See page 9.

Blade tilt lines completely protected.

High-rigidity, simple hull frameand monocoque track frame with pivotshaft for greater reliability.See page 9.Wet disc brakes require less maintenance.

K-Bogie undercarriage systemimproves traction, component durability, andoperator comfort. See page 9.

Increased-track length, seven roller undercarriage ensures outstanding grading ability and stability.

Extra-low machine profileprovides excellent machine balance and low center of gravity.

SAA6D140E-5 turbocharged after-cooleddiesel engine provides an output of 264 kW 354 HPwith excellent productivity. EPA Tier 3 and EU stage 3Aemissions certified. See page 6.

HSS (Hydrostatic Steering System) provides smooth, quick, and powerful control in various ground conditions.

Automatic transmission with lockup torqueconverter increases speed and power to improve fuelconsumption and productivity. See page 5.

Innovative SIGMADOZER reduces diggingresistance and demonstrates smooth material roll upto increase blade load. Blade capacity 9.4 m3 12.3 yd3. See page 4.

OUTSTANDING PRODUCTIVITY &FUEL ECONOMY

54

PRODUCTIVITY & FUEL ECONOMY FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Torque converter

Engine Transmission

Lockup “ON”

Lockup “OFF”

Travel performance curve

Dra

wba

r pu

ll to

n

0

10

20

30

40

50

60

70

5 10

Fuel economy through effective usage of engine power (Decreased by 10%)

Automatic lockup ON in the practical dozing work range

Automatic gearshift modeManual gearshift mode

Travel speed (km/h)

Lockup mechanism of torqueconverter is automaticallyactuated to transfer enginepower directly to thetransmission in usual dozingspeed range. Locking up thetorque converter eliminatesloss of horsepower by 10%.Because the electronicallycontrolled engine is extremelyefficient, a decrease in fuelconsumption is realized whilealso maintaining machinepower.

SIGMADOZER

Based on a completely new digging theory, SIGMADOZER

dramatically improves dozing performance and increases

productivity. A new frontal design concept adopted for

digging and rolling up at the center of the blade increases

soil holding capacity, simultaneously reducing sideway

spillage. Reduced digging resistance produces smoother

flow of earth, enabling the dozing of larger quantities of soil

with less power. In addition, adoption of a new blade linkage

system holds the blade closer to the tractor for improved

visibility, enhanced digging force and reduced lateral sway

of the blade. This is the new generation blade.

Automatic transmission with lockup torqueconverter

A sharp reduction in fuel consumption and greater power

train efficiency is achieved by the new automatic gearshift

transmission and lock up torque converter. The automatic

gearshift transmission selects the optimal gear range

depending on the working conditions and load placed on

the machine. This means the machine is always operating

at maximum efficiency. (Manual gearshift mode is selectable

with a switch)

Fuel consumption decreased by 10%(compared with our conventional model)

Outstanding productivity

Outstanding fuel economy

SIGMADOZER

Automatic transmission with lockup torque converter

KOMATSUSAA6D140E-5 engine

New fuel efficient bulldozer

New D155AX-6 has achieved both high levels of

productivity and fuel economy through usage of

SIGMADOZER and automatic transmission with

lockup torque converter. SIGMADOZER developed

based on completely new digging theory dramatically

increases production. New transmission with high

power transmission efficiency greatly reduces fuel

consumption. This bulldozer significantly improves

fuel efficiency compared with our conventional model.

D155AX-6SIGMADOZER

D155AX-5Semi-U blade

Shape of dozed material

Shape of dozed material

SIGMADOZER Semi-U blade

SIGMADOZER

Automatic transmission withlockup torque converter

15%increase

25%increase

10%decrease

(Compared with our conventional model)

FUEL CONSUMPTION:

PRODUCTION:

FUEL EFFICIENCY:

Automatic/manual gearshift selectable mode

Automatic or manual gearshift modes can be selected with ease to suit the work at hand by simply pressing the switch on

the multi-monitor (selection at neutral).

● Automatic gearshift modeThe mode for general dozing. When a load is applied, the gear automatically shifts down, and when the load is off, itautomatically shifts up to a set maximum gear speed. This mode economizes both fuel and production where the torqueconverter lockup mechanism is actuated according to load, automatically selecting the optimum gear speed.

● Manual gearshift modeThe mode for dozing and ripping rough ground. When loaded, the gear automatically shifts down, but does not shift up whenthe load is off.

Automatic gearshiftmode screen

Manual gearshiftmode screen

Production increased by 15%(compared with our conventional model)

54

PRODUCTIVITY & FUEL ECONOMY FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Torque converter

Engine Transmission

Lockup “ON”

Lockup “OFF”

Travel performance curve

Dra

wba

r pu

ll to

n

0

10

20

30

40

50

60

70

5 10

Fuel economy through effective usage of engine power (Decreased by 10%)

Automatic lockup ON in the practical dozing work range

Automatic gearshift modeManual gearshift mode

Travel speed (km/h)

Lockup mechanism of torqueconverter is automaticallyactuated to transfer enginepower directly to thetransmission in usual dozingspeed range. Locking up thetorque converter eliminatesloss of horsepower by 10%.Because the electronicallycontrolled engine is extremelyefficient, a decrease in fuelconsumption is realized whilealso maintaining machinepower.

SIGMADOZER

Based on a completely new digging theory, SIGMADOZER

dramatically improves dozing performance and increases

productivity. A new frontal design concept adopted for

digging and rolling up at the center of the blade increases

soil holding capacity, simultaneously reducing sideway

spillage. Reduced digging resistance produces smoother

flow of earth, enabling the dozing of larger quantities of soil

with less power. In addition, adoption of a new blade linkage

system holds the blade closer to the tractor for improved

visibility, enhanced digging force and reduced lateral sway

of the blade. This is the new generation blade.

Automatic transmission with lockup torqueconverter

A sharp reduction in fuel consumption and greater power

train efficiency is achieved by the new automatic gearshift

transmission and lock up torque converter. The automatic

gearshift transmission selects the optimal gear range

depending on the working conditions and load placed on

the machine. This means the machine is always operating

at maximum efficiency. (Manual gearshift mode is selectable

with a switch)

Fuel consumption decreased by 10%(compared with our conventional model)

Outstanding productivity

Outstanding fuel economy

SIGMADOZER

Automatic transmission with lockup torque converter

KOMATSUSAA6D140E-5 engine

New fuel efficient bulldozer

New D155AX-6 has achieved both high levels of

productivity and fuel economy through usage of

SIGMADOZER and automatic transmission with

lockup torque converter. SIGMADOZER developed

based on completely new digging theory dramatically

increases production. New transmission with high

power transmission efficiency greatly reduces fuel

consumption. This bulldozer significantly improves

fuel efficiency compared with our conventional model.

D155AX-6SIGMADOZER

D155AX-5Semi-U blade

Shape of dozed material

Shape of dozed material

SIGMADOZER Semi-U blade

SIGMADOZER

Automatic transmission withlockup torque converter

15%increase

25%increase

10%decrease

(Compared with our conventional model)

FUEL CONSUMPTION:

PRODUCTION:

FUEL EFFICIENCY:

Automatic/manual gearshift selectable mode

Automatic or manual gearshift modes can be selected with ease to suit the work at hand by simply pressing the switch on

the multi-monitor (selection at neutral).

● Automatic gearshift modeThe mode for general dozing. When a load is applied, the gear automatically shifts down, and when the load is off, itautomatically shifts up to a set maximum gear speed. This mode economizes both fuel and production where the torqueconverter lockup mechanism is actuated according to load, automatically selecting the optimum gear speed.

● Manual gearshift modeThe mode for dozing and ripping rough ground. When loaded, the gear automatically shifts down, but does not shift up whenthe load is off.

Automatic gearshiftmode screen

Manual gearshiftmode screen

Production increased by 15%(compared with our conventional model)

Palm command electronic controlled blade/rippercontrol joystick

Electronically-

controlled palm

command joystick is

equipped for blade/

ripper control.

Combined with the

highly reliable

Komatsu hydraulic

system, superb control

is the result.

76

ECOLOGY FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Komatsu’s ergonomically designed control system “PCCS” creates an operating environment with “complete operator control”.

ECMV

ECMV

HSS

HSSValve

HSS MOTOR

M

EPCEPC

ECM

VEC

MV

ECM

VEC

MV

EP

CE

PC

[Komnet]

Electroniccontrolledtravel controllever

Electroniccontrolledblade controllever

Electroniccontrolledripper controllever

Fuelcontrol dial Brake pedal

Monitor panel

KOMTRAXterminal

Decelerationpedal

Transmissioncontrol valve

Enginecontroller

Steering and transmissioncontroller

Air conditionercontroller

Blade controller

Electronic controlledtransmission

Main valve Quick dropvalveEngine Torque converter

EP

CE

PC

EP

CE

PC

Outline of electronic control system

Blade control joystick

Ripper control joystick

Main valve Quick drop valve

Multi-monitor

Controller

Human-Machine Interface PCCS (Palm Command Control System)

Gearshift pattern preset function

When the gearshift pattern is set to either <F1-R2>, <F2-

R2> or <F2-R3L> in automatic gearshift mode, the gear is

automatically shifted, reducing round trip repetition work

time and operator's efforts.

F1-R1 MODE

Automatic gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press DOWN switch

Press UP switch

Press UP switch

F2-R3L MODEPress DOWN switch Press UP switch

F1-R1 MODE

Manual gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press DOWN switch

Press UP switch

Press UP switch

UP

DOWN

ECMV (Electronic Controlled Modulation Valve)controlled transmission and brakes

Controller automatically adjusts each clutch engagement

depending on travel conditions, providing smooth shockless

clutch engagement, improved component life and operator

ride comfort.

Hydrostatic Steering System—smooth, powerfulturning

The engine power is transmitted to both tracks without

power interruption on the inside track for smooth, powerful

turns. Counter-rotation is available for minimum turning

radius providing excellent maneuverability.

Fuel efficient electronic controlled engine

The Komatsu SAA6D140E-5 engine delivers 264 kW 354

HP at 1900 rpm. The fuel-efficient, powerful Komatsu engine

makes the D155AX superior in both ripping and dozing

operations. The engine is EPA Tier 3 and EU stage 3A

emissions certified. The engine is turbocharged and features

direct fuel injection and air-to-air aftercooling to maximize

power, fuel efficiency and emission compliance.

To minimize noise and vibration, the engine is mounted to

the main frame with rubber cushions.

Hydraulic drive radiator cooling fan

The engine cooling fan rotation speed is electronically

controlled. The fan rotation speed depends on engine

coolant and hydraulic oil temperatures, the higher the

temperature the higher the fan speed. This system increases

fuel efficiency, reduces the operating noise levels and

requires less horsepower than belt driven fan.

Engine

CONTROL FEATURES

Palm command electronic controlled travelcontrol joystick

Palm command travel joystick

provides the operator with a relaxed

posture and superb fine control

without operator fatigue.

Transmission gear shifting is

simplified with thumb push buttons.

RH

DOWN SHIFT

UP SHIFT FLH

R

Komatsu develops and produces all major components,

such as engines, electronics and hydraulic components in

house.

With this "Komatsu Technology", and adding customer

feedback, Komatsu is achieving great advancements in

technology.

To achieve high levels of productivity and ecology, Komatsu

developed the main components with an advanced control

system.

The result is a new generation of high performance and

environment friendly machines.

Palm command electronic controlled blade/rippercontrol joystick

Electronically-

controlled palm

command joystick is

equipped for blade/

ripper control.

Combined with the

highly reliable

Komatsu hydraulic

system, superb control

is the result.

76

ECOLOGY FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Komatsu’s ergonomically designed control system “PCCS” creates an operating environment with “complete operator control”.

ECMV

ECMV

HSS

HSSValve

HSS MOTOR

M

EPCEPC

ECM

VEC

MV

ECM

VEC

MV

EP

CE

PC

[Komnet]

Electroniccontrolledtravel controllever

Electroniccontrolledblade controllever

Electroniccontrolledripper controllever

Fuelcontrol dial Brake pedal

Monitor panel

KOMTRAXterminal

Decelerationpedal

Transmissioncontrol valve

Enginecontroller

Steering and transmissioncontroller

Air conditionercontroller

Blade controller

Electronic controlledtransmission

Main valve Quick dropvalveEngine Torque converter

EP

CE

PC

EP

CE

PC

Outline of electronic control system

Blade control joystick

Ripper control joystick

Main valve Quick drop valve

Multi-monitor

Controller

Human-Machine Interface PCCS (Palm Command Control System)

Gearshift pattern preset function

When the gearshift pattern is set to either <F1-R2>, <F2-

R2> or <F2-R3L> in automatic gearshift mode, the gear is

automatically shifted, reducing round trip repetition work

time and operator's efforts.

F1-R1 MODE

Automatic gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press DOWN switch

Press UP switch

Press UP switch

F2-R3L MODEPress DOWN switch Press UP switch

F1-R1 MODE

Manual gearshift mode

F1-R2 MODE

F2-R2 MODE

Press DOWN switch

Press DOWN switch

Press UP switch

Press UP switch

UP

DOWN

ECMV (Electronic Controlled Modulation Valve)controlled transmission and brakes

Controller automatically adjusts each clutch engagement

depending on travel conditions, providing smooth shockless

clutch engagement, improved component life and operator

ride comfort.

Hydrostatic Steering System—smooth, powerfulturning

The engine power is transmitted to both tracks without

power interruption on the inside track for smooth, powerful

turns. Counter-rotation is available for minimum turning

radius providing excellent maneuverability.

Fuel efficient electronic controlled engine

The Komatsu SAA6D140E-5 engine delivers 264 kW 354

HP at 1900 rpm. The fuel-efficient, powerful Komatsu engine

makes the D155AX superior in both ripping and dozing

operations. The engine is EPA Tier 3 and EU stage 3A

emissions certified. The engine is turbocharged and features

direct fuel injection and air-to-air aftercooling to maximize

power, fuel efficiency and emission compliance.

To minimize noise and vibration, the engine is mounted to

the main frame with rubber cushions.

Hydraulic drive radiator cooling fan

The engine cooling fan rotation speed is electronically

controlled. The fan rotation speed depends on engine

coolant and hydraulic oil temperatures, the higher the

temperature the higher the fan speed. This system increases

fuel efficiency, reduces the operating noise levels and

requires less horsepower than belt driven fan.

Engine

CONTROL FEATURES

Palm command electronic controlled travelcontrol joystick

Palm command travel joystick

provides the operator with a relaxed

posture and superb fine control

without operator fatigue.

Transmission gear shifting is

simplified with thumb push buttons.

RH

DOWN SHIFT

UP SHIFT FLH

R

Komatsu develops and produces all major components,

such as engines, electronics and hydraulic components in

house.

With this "Komatsu Technology", and adding customer

feedback, Komatsu is achieving great advancements in

technology.

To achieve high levels of productivity and ecology, Komatsu

developed the main components with an advanced control

system.

The result is a new generation of high performance and

environment friendly machines.

Multi-monitor with troubleshooting function toprevent critical machine troubles

Various meters, gauges, and warning functions are centrally

arranged on the multi-monitor. Offers ease of start-up

inspection and promptly warns the operator with a lamp

and buzzer if any abnormalities should occur. In addition,

countermeasures are indicated in 4 stage codes to ensure

safety and prevent the machine from major problems.

Replacement times for oil and filters are also indicated.

Easy radiator cleaning with hydraulic drive fan

The radiator can be cleaned by utilization of the reversible,

hydraulically driven cooling fan. The fan can be reversed

from inside the cab by simply turning the switch to reverse.

Oil pressure checking ports

Pressure checking ports for power train components arecentralized to promote quick and simple diagnosis.

Gull-wing engine side covers

The opening area is further

enlarged when gull-wing

engine side covers are

opened, facilitating engine

maintenance and filter

replacement. Side covers

have been changed to a

thick one-piece structure

with a bolt-on catch to improve durability.

98

MAINTENANCE FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Preventative maintenancePreventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the

D155AX-6 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

Increased undercarriage component life

K-Bogie track rollers having

a large oscillation travel

always follow the track link

even on uneven ground.

This feature keeps the

correct alignment between

the rollers and links to

contribute long

undercarriage component life.

Reliable simple hull frame

Simple hull structure main frame design increases durability

and reduces stress concentration at critical areas. The track

frame has a large cross section and utilizes pivot shaft

mounting for greater reliability.

Sealed DT connectors

Main harnesses and controller connectors are equipped with

sealed DT connectors providing high reliability, as well as

water and dust resistance.

Flat face O-ring seals

Flat face O-ring seals are used to securely seal all hydraulic

hose connections and to prevent oil leakage.

Enclosed hydraulic piping

Hydraulic piping for the blade tilt cylinder is completely

housed in the push arm, protecting it from damage.

Modular power train design

Power train components

are sealed in a modular

design that allows the

components to be removed

and installed without oil

spillage, making servicing

work clean, smooth and

easy.

Maintenance free disc brakes

Wet disc brakes require less maintenance.

New integrated ROPS cab

A newly designed cab is integrated with ROPS according to

the latest computer analysis. High rigidity and superb sealing

performance sharply reduce noise and vibration for the

operator and prevents dust from entering the cab. Relaxed

operation in comfortable environment. In addition, side

visibility is increased because external ROPS structure and

posts are not required. Outstanding visibility has been

achieved.

SpringSilicon oil

Rubber Boot

WORKING ENVIRONMENT

Pivot shaft

Final drive

Hull frame

Track frame

Engine

Low maintenance costs

Ripper visibility

Ripper cylinders were reduced

from four to two, greatly

improving rear visibility during

ripping.

Also, expanded ripper

movement offers a wider range

of operation.

Comfortable ride with cab damper mountingThe D155AX-6’s cab mount uses a cab damper which

provides excellent shock and vibration absorption capacity

with its long stroke. Cab damper mounts soften shocks and

vibration while traveling over adverse conditions, which

conventional mounting systems are unable to absorb. The

cab damper spring isolates the cab from the machine body,

suppressing vibration and providing a quiet, comfortable

operating environment.

Air conditioner switches

Basic operation switches

Function switches

Indicators

Large multi-lingual LCD color monitor

A large user-friendly color monitor enables safe, accurate

and smooth work. Improved screen visibility is achieved by

use of TFT liquid crystal display that can easily be read at

various angles and lighting conditions. Simple and easy to

operate switches. Industry first function keys facilitate multi-

function operations.

Display data in 10 languages to globally support operators

around the world.

D155AX-6D155AX-5

G.L

Ripper pointpenetrationarea

Multi-monitor with troubleshooting function toprevent critical machine troubles

Various meters, gauges, and warning functions are centrally

arranged on the multi-monitor. Offers ease of start-up

inspection and promptly warns the operator with a lamp

and buzzer if any abnormalities should occur. In addition,

countermeasures are indicated in 4 stage codes to ensure

safety and prevent the machine from major problems.

Replacement times for oil and filters are also indicated.

Easy radiator cleaning with hydraulic drive fan

The radiator can be cleaned by utilization of the reversible,

hydraulically driven cooling fan. The fan can be reversed

from inside the cab by simply turning the switch to reverse.

Oil pressure checking ports

Pressure checking ports for power train components arecentralized to promote quick and simple diagnosis.

Gull-wing engine side covers

The opening area is further

enlarged when gull-wing

engine side covers are

opened, facilitating engine

maintenance and filter

replacement. Side covers

have been changed to a

thick one-piece structure

with a bolt-on catch to improve durability.

98

MAINTENANCE FEATURES

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

Preventative maintenancePreventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the

D155AX-6 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

Increased undercarriage component life

K-Bogie track rollers having

a large oscillation travel

always follow the track link

even on uneven ground.

This feature keeps the

correct alignment between

the rollers and links to

contribute long

undercarriage component life.

Reliable simple hull frame

Simple hull structure main frame design increases durability

and reduces stress concentration at critical areas. The track

frame has a large cross section and utilizes pivot shaft

mounting for greater reliability.

Sealed DT connectors

Main harnesses and controller connectors are equipped with

sealed DT connectors providing high reliability, as well as

water and dust resistance.

Flat face O-ring seals

Flat face O-ring seals are used to securely seal all hydraulic

hose connections and to prevent oil leakage.

Enclosed hydraulic piping

Hydraulic piping for the blade tilt cylinder is completely

housed in the push arm, protecting it from damage.

Modular power train design

Power train components

are sealed in a modular

design that allows the

components to be removed

and installed without oil

spillage, making servicing

work clean, smooth and

easy.

Maintenance free disc brakes

Wet disc brakes require less maintenance.

New integrated ROPS cab

A newly designed cab is integrated with ROPS according to

the latest computer analysis. High rigidity and superb sealing

performance sharply reduce noise and vibration for the

operator and prevents dust from entering the cab. Relaxed

operation in comfortable environment. In addition, side

visibility is increased because external ROPS structure and

posts are not required. Outstanding visibility has been

achieved.

SpringSilicon oil

Rubber Boot

WORKING ENVIRONMENT

Pivot shaft

Final drive

Hull frame

Track frame

Engine

Low maintenance costs

Ripper visibility

Ripper cylinders were reduced

from four to two, greatly

improving rear visibility during

ripping.

Also, expanded ripper

movement offers a wider range

of operation.

Comfortable ride with cab damper mountingThe D155AX-6’s cab mount uses a cab damper which

provides excellent shock and vibration absorption capacity

with its long stroke. Cab damper mounts soften shocks and

vibration while traveling over adverse conditions, which

conventional mounting systems are unable to absorb. The

cab damper spring isolates the cab from the machine body,

suppressing vibration and providing a quiet, comfortable

operating environment.

Air conditioner switches

Basic operation switches

Function switches

Indicators

Large multi-lingual LCD color monitor

A large user-friendly color monitor enables safe, accurate

and smooth work. Improved screen visibility is achieved by

use of TFT liquid crystal display that can easily be read at

various angles and lighting conditions. Simple and easy to

operate switches. Industry first function keys facilitate multi-

function operations.

Display data in 10 languages to globally support operators

around the world.

D155AX-6D155AX-5

G.L

Ripper pointpenetrationarea

DOZER EQUIPMENT

DIMENSIONS

HYDRAULIC SYSTEM

1110

SPECIFICATIONS

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

STEERING SYSTEM

PCCS lever controls for all directional movements. Pushing thePCCS lever forward results in forward machine travel, while pulling itrearward reverses the machine. Simply tilt the PCCS lever to the leftto make a left turn. Tilt it to the right for a right turn.

Hydrostatic steering system (HSS) is powered by steering planetaryunits and an independent hydraulic pump and motor. Counter-rotation turns are also available. Wet, multiple-disc, pedal-controlledservice brakes are spring-actuated and hydraulically released.Gearshift lock lever also applies parking brakes.

Minimum turning radius. . . . . . . . . . . . . . . . . . . . . . . . . . 2.14 m 7'0"

UNDERCARRIAGE

Suspension. . . . . . . . . . . . . . . . . . Oscillation-type with equalizer bar and forward mounted pivot shafts

Track roller frame . . . . . . . . . . . . . . . . . . . . Monocoque, high-tensile-strength steel construction

K-Bogie undercarriageLubricated track rollers are resiliently mounted the track frame witha bogie suspension system whose oscillating motion is cushionedby rubber pads.

Track shoesLubricated tracks. Unique dust seals for preventing entry of foreignabrasives into pin-to-bushing clearance for extended service. Tracktension easily adjusted with grease gun.

Number of shoes (each side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Grouser height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 mm 3.1"Shoe width (standard/maximum) . . . . . . . . 560 mm 22"/710 mm 28"Ground contact area . . . . . . . . . . . . . . . . . . . . . 36680 cm2 5,685 in2

Ground pressure (tractor only) . . . . . . 82.4 kPa 0.84 kg/cm2 11.9 psiNumber of track rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . . 7Number of carrier rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . 2

COOLANT AND LUBRICANT

CAPACITY (REFILL)

Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625 ltr 165 U.S. galCoolant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 ltr 21.7 U.S. galEngine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. galDamper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 ltr 0.4 U.S. galTransmission, bevel gear

and steering system . . . . . . . . . . . . . . . . . . . 90 ltr 23.8 U.S. galFinal drive (each side). . . . . . . . . . . . . . . . . . . . 31 ltr 8.2 U.S. gal

OPERATING WEIGHT

Tractor weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 31000 kg 68,350 lbIncluding rated capacity of lubricant, coolant, full fuel tank,operator and standard equipment

Operating weight . . . . . . . . . . . . . . . . . . . . . . . . 39500 kg 87,100 lbIncluding strengthened SIGMADOZER, giant ripper, ROPS cab,operator, standard equipment, rated capacity of lubricant, coolant,and full fuel tank.

Ground pressure . . . . . . . . . . . . . . . 106 kPa 1.08 kg/cm2 15.4 psiFINAL DRIVES

Double-reduction, spur and planetary final drives increase tractiveeffort. Segmented sprockets are bolt-on for easy in-the-fieldreplacement.

70

60

50

70

60

50

40

30

20

10

0

40

30

20

10

00

0 1 2 3 4 5 6 7 mph

Travel Speed

Dra

wb

ar P

ull

2 4 6 8 10 12 km/h

US ton tonkN

400

500

600

300

200

100

0

F1

F2

F3F3L

Manual gearshift mode

Automatic gearshift mode

D155AX-6 Power Shift

DRAWBAR PULL VS. SPEED.

MAXIMUM USABLE PULL DEPENDS ON TRACTION AND

WEIGHT OF TRACTOR INCLUDINGMOUNTED EQUIPMENT.

Travel speed Forward Reverse1st 3.8 km/h 2.4 mph 4.6 km/h 2.9 mph2nd 5.6 km/h 3.5 mph 6.8 km/h 4.2 mph3rd L 7.5 km/h 4.7 mph 9.2 km/h 5.7 mph3rd 11.6 km/h 7.2 mph 14.0 km/h 8.7 mph

ENGINE

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-5Type. . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injectionAspiration. . . . . . . . Turbocharged, air-to-air aftercooled, cooled EGRNumber of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Bore x stroke . . . . . . . . . . . . . . . . . 140 mm x 165 mm 5.51" x 6.50"Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in3

Governor . . . . . . . . . . . . . . . . . . All-speed and mid-range, electronicHorsepower

SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . . Gross 268kW 360HPISO 9249 / SAE J1349* . . . . . . . . . . . . . . . . . . Net 264kW 354HPRated rpm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1900rpm

Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HydraulicLubrication system

Method . . . . . . . . . . . . . . . . . . . . . . . Gear pump, force lubricationFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow*Net horsepower at the maximum speed of

radiator cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239kW 320HPEPA Tier 3 and EU Stage 3A emissions certified.

TORQFLOW TRANSMISSION

Komatsu’s automatic TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockupclutch, and a planetary gear, multiple-disc clutch transmission whichis hydraulically actuated and force-lubricated for optimum heatdissipation. Gearshift lock lever and neutral safety switch preventmachine from accidental starts.

Overall length Blade Blade Maximum lift Maximum drop Maximum tilt Additionalwith dozer capacity length x height above ground below ground adjustment weight

SIGMADOZER6125 mm 9.4 m3 4060 mm x 1850 mm 1320 mm 617 mm 920 mm 4940 kg

20'1" 12.3 yd3 13'4" x 6'1" 4'4" 2' 3' 10,890 lbStrengthened 6125 mm 9.4 m3 4060 mm x 1850 mm 1320 mm 617 mm 920 mm 5360 kgSIGMADOZER 20'1" 12.3 yd3 13'4" x 6'1" 4'4" 2' 3' 11,820 lb

Semi-U 6175 mm 9.4 m3 4130 mm x 1790 mm 1255 mm 593 mm 953 mm 4960 kgTilt Dozer 20'3" 12.3 yd3 13'7" x 5'10" 4'1" 1'11" 3' 10,936 lb

Full-U 6590 mm 11.9 m3 4225 mm x 1790 mm 1255 mm 593 mm 970 mm 5630 kgTilt Dozer 21'7" 15.6 yd3 13'10" x 5'10" 4'1" 1'11" 3'2" 12,420 lb

Angle 6743 mm 4.6 m3 4850 mm x 1205 mm 1562 mm 664 mm 520 mm 5170 kgDozer 22'1" 6.0 yd3 15'11" x 3'11" 5'1" 2'2" 1'8" 11,400 lb

Number of cylinders BoreBlade Lift 2 110 mm 4.33"Blade Tilt 1 160 mm 6.30"Ripper Lift 1 180 mm 7.09"Ripper Tilt 1 200 mm 7.87"

Closed-center load sensing system (CLSS) designed for precise andresponsive control, and for efficient simultaneous operation.

Hydraulic control unit:All spool control valves externally mounted beside the hydraulic tank.Variable piston pump with capacity (discharge flow) of 325 ltr/min 85.9 U.S. gal/min for steering and 180 ltr/min 47.6 U.S.gal/min for imlement at rated engine rpm.

Relief valve setting . . . for implement 27.5 MPa 280 kg/cm2 3,980 psi . . . . . for steering 38.2 MPa 390 kg/cm2 5,550 psi

Control valves:Spool control valve for SIGMADOZER, Semi-U tilt dozer and Full-Utilt dozer.

Positions: Blade lift . . . . . . . . . . . . . . . Raise, hold, lower, and floatBlade tilt . . . . . . . . . . . . . . . . . . . . . Right, hold, and left

Additional control valve required for variable digging angle multi-shank ripper and giant ripper.

Positions: Ripper lift . . . . . . . . . . . . . . . . . . Raise, hold, and lowerRipper tilt . . . . . . . . . . . . . Increase, hold, and decrease

Hydraulic cylinders . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston

Hydraulic oil capacity (refill):Semi-U tilt dozer . . . . . . . . . . . . . . . . . . . . . . 85 ltr 22.5 U.S. galU-tilt dozer . . . . . . . . . . . . . . . . . . . . . . . . . . 85 ltr 22.5 U.S. gal

Ripper equipment (additional volume):Multi-shank ripper . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. galGiant ripper . . . . . . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. gal

Use of high-tensile-strength steel in moldboard for strengthened blade construction. Blade tilt hose piping is mounted inside the dozer push arm to protect from damage.

G.L

E

F

G

I

J

H

A

D

Ground clearance: 500 mm 1' 8"

B

C

A 4060 mm 13'4"B 2140 mm 7'C 3385 mm 11'1"D 1850 mm 6'1"E 3275 mm 10'9"F 8225 mm 27'G 2745 mm 9'H 1240 mm 4'1"I 950 mm 3'1"J 3395 mm 11'2"

DOZER EQUIPMENT

DIMENSIONS

HYDRAULIC SYSTEM

1110

SPECIFICATIONS

D155AX-6CRAWLER DOZERD155AX-6 C R A W L E R D O Z E R

STEERING SYSTEM

PCCS lever controls for all directional movements. Pushing thePCCS lever forward results in forward machine travel, while pulling itrearward reverses the machine. Simply tilt the PCCS lever to the leftto make a left turn. Tilt it to the right for a right turn.

Hydrostatic steering system (HSS) is powered by steering planetaryunits and an independent hydraulic pump and motor. Counter-rotation turns are also available. Wet, multiple-disc, pedal-controlledservice brakes are spring-actuated and hydraulically released.Gearshift lock lever also applies parking brakes.

Minimum turning radius. . . . . . . . . . . . . . . . . . . . . . . . . . 2.14 m 7'0"

UNDERCARRIAGE

Suspension. . . . . . . . . . . . . . . . . . Oscillation-type with equalizer bar and forward mounted pivot shafts

Track roller frame . . . . . . . . . . . . . . . . . . . . Monocoque, high-tensile-strength steel construction

K-Bogie undercarriageLubricated track rollers are resiliently mounted the track frame witha bogie suspension system whose oscillating motion is cushionedby rubber pads.

Track shoesLubricated tracks. Unique dust seals for preventing entry of foreignabrasives into pin-to-bushing clearance for extended service. Tracktension easily adjusted with grease gun.

Number of shoes (each side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Grouser height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 mm 3.1"Shoe width (standard/maximum) . . . . . . . . 560 mm 22"/710 mm 28"Ground contact area . . . . . . . . . . . . . . . . . . . . . 36680 cm2 5,685 in2

Ground pressure (tractor only) . . . . . . 82.4 kPa 0.84 kg/cm2 11.9 psiNumber of track rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . . 7Number of carrier rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . 2

COOLANT AND LUBRICANT

CAPACITY (REFILL)

Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625 ltr 165 U.S. galCoolant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 ltr 21.7 U.S. galEngine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. galDamper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 ltr 0.4 U.S. galTransmission, bevel gear

and steering system . . . . . . . . . . . . . . . . . . . 90 ltr 23.8 U.S. galFinal drive (each side). . . . . . . . . . . . . . . . . . . . 31 ltr 8.2 U.S. gal

OPERATING WEIGHT

Tractor weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 31000 kg 68,350 lbIncluding rated capacity of lubricant, coolant, full fuel tank,operator and standard equipment

Operating weight . . . . . . . . . . . . . . . . . . . . . . . . 39500 kg 87,100 lbIncluding strengthened SIGMADOZER, giant ripper, ROPS cab,operator, standard equipment, rated capacity of lubricant, coolant,and full fuel tank.

Ground pressure . . . . . . . . . . . . . . . 106 kPa 1.08 kg/cm2 15.4 psiFINAL DRIVES

Double-reduction, spur and planetary final drives increase tractiveeffort. Segmented sprockets are bolt-on for easy in-the-fieldreplacement.

70

60

50

70

60

50

40

30

20

10

0

40

30

20

10

00

0 1 2 3 4 5 6 7 mph

Travel Speed

Dra

wb

ar P

ull

2 4 6 8 10 12 km/h

US ton tonkN

400

500

600

300

200

100

0

F1

F2

F3F3L

Manual gearshift mode

Automatic gearshift mode

D155AX-6 Power Shift

DRAWBAR PULL VS. SPEED.

MAXIMUM USABLE PULL DEPENDS ON TRACTION AND

WEIGHT OF TRACTOR INCLUDINGMOUNTED EQUIPMENT.

Travel speed Forward Reverse1st 3.8 km/h 2.4 mph 4.6 km/h 2.9 mph2nd 5.6 km/h 3.5 mph 6.8 km/h 4.2 mph3rd L 7.5 km/h 4.7 mph 9.2 km/h 5.7 mph3rd 11.6 km/h 7.2 mph 14.0 km/h 8.7 mph

ENGINE

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-5Type. . . . . . . . . . . . . . . . . . . . . 4-cycle, water-cooled, direct injectionAspiration. . . . . . . . Turbocharged, air-to-air aftercooled, cooled EGRNumber of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Bore x stroke . . . . . . . . . . . . . . . . . 140 mm x 165 mm 5.51" x 6.50"Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in3

Governor . . . . . . . . . . . . . . . . . . All-speed and mid-range, electronicHorsepower

SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . . Gross 268kW 360HPISO 9249 / SAE J1349* . . . . . . . . . . . . . . . . . . Net 264kW 354HPRated rpm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1900rpm

Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HydraulicLubrication system

Method . . . . . . . . . . . . . . . . . . . . . . . Gear pump, force lubricationFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow*Net horsepower at the maximum speed of

radiator cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239kW 320HPEPA Tier 3 and EU Stage 3A emissions certified.

TORQFLOW TRANSMISSION

Komatsu’s automatic TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockupclutch, and a planetary gear, multiple-disc clutch transmission whichis hydraulically actuated and force-lubricated for optimum heatdissipation. Gearshift lock lever and neutral safety switch preventmachine from accidental starts.

Overall length Blade Blade Maximum lift Maximum drop Maximum tilt Additionalwith dozer capacity length x height above ground below ground adjustment weight

SIGMADOZER6125 mm 9.4 m3 4060 mm x 1850 mm 1320 mm 617 mm 920 mm 4940 kg

20'1" 12.3 yd3 13'4" x 6'1" 4'4" 2' 3' 10,890 lbStrengthened 6125 mm 9.4 m3 4060 mm x 1850 mm 1320 mm 617 mm 920 mm 5360 kgSIGMADOZER 20'1" 12.3 yd3 13'4" x 6'1" 4'4" 2' 3' 11,820 lb

Semi-U 6175 mm 9.4 m3 4130 mm x 1790 mm 1255 mm 593 mm 953 mm 4960 kgTilt Dozer 20'3" 12.3 yd3 13'7" x 5'10" 4'1" 1'11" 3' 10,936 lb

Full-U 6590 mm 11.9 m3 4225 mm x 1790 mm 1255 mm 593 mm 970 mm 5630 kgTilt Dozer 21'7" 15.6 yd3 13'10" x 5'10" 4'1" 1'11" 3'2" 12,420 lb

Angle 6743 mm 4.6 m3 4850 mm x 1205 mm 1562 mm 664 mm 520 mm 5170 kgDozer 22'1" 6.0 yd3 15'11" x 3'11" 5'1" 2'2" 1'8" 11,400 lb

Number of cylinders BoreBlade Lift 2 110 mm 4.33"Blade Tilt 1 160 mm 6.30"Ripper Lift 1 180 mm 7.09"Ripper Tilt 1 200 mm 7.87"

Closed-center load sensing system (CLSS) designed for precise andresponsive control, and for efficient simultaneous operation.

Hydraulic control unit:All spool control valves externally mounted beside the hydraulic tank.Variable piston pump with capacity (discharge flow) of 325 ltr/min 85.9 U.S. gal/min for steering and 180 ltr/min 47.6 U.S.gal/min for imlement at rated engine rpm.

Relief valve setting . . . for implement 27.5 MPa 280 kg/cm2 3,980 psi . . . . . for steering 38.2 MPa 390 kg/cm2 5,550 psi

Control valves:Spool control valve for SIGMADOZER, Semi-U tilt dozer and Full-Utilt dozer.

Positions: Blade lift . . . . . . . . . . . . . . . Raise, hold, lower, and floatBlade tilt . . . . . . . . . . . . . . . . . . . . . Right, hold, and left

Additional control valve required for variable digging angle multi-shank ripper and giant ripper.

Positions: Ripper lift . . . . . . . . . . . . . . . . . . Raise, hold, and lowerRipper tilt . . . . . . . . . . . . . Increase, hold, and decrease

Hydraulic cylinders . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston

Hydraulic oil capacity (refill):Semi-U tilt dozer . . . . . . . . . . . . . . . . . . . . . . 85 ltr 22.5 U.S. galU-tilt dozer . . . . . . . . . . . . . . . . . . . . . . . . . . 85 ltr 22.5 U.S. gal

Ripper equipment (additional volume):Multi-shank ripper . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. galGiant ripper . . . . . . . . . . . . . . . . . . . . . . . . . 37 ltr 9.8 U.S. gal

Use of high-tensile-strength steel in moldboard for strengthened blade construction. Blade tilt hose piping is mounted inside the dozer push arm to protect from damage.

G.L

E

F

G

I

J

H

A

D

Ground clearance: 500 mm 1' 8"

B

C

A 4060 mm 13'4"B 2140 mm 7'C 3385 mm 11'1"D 1850 mm 6'1"E 3275 mm 10'9"F 8225 mm 27'G 2745 mm 9'H 1240 mm 4'1"I 950 mm 3'1"J 3395 mm 11'2"

Variable multi-shank ripper● Additional weight (including hydraulic control unit): 3760 kg 8,290 lb● Beam length: 2320 mm 7'7"● Hydraulically-controlled parallelogram-type ripper with three shanks.

Digging angle infinitely adjustable.Standard digging angle*: 49°

● Maximum digging depth: 900 mm 2'11"● Maximum lift above ground: 950 mm 3'1"

Variable giant ripper● Additional weight (including hydraulic control unit): 2440 kg 5,380 lb ● Beam length: 1400 mm 4'7" ● Hydraulically-controlled parallelogram-type ripper with one shank.

Digging angle infinitely adjustable.Standard digging angle*: 49°

● Maximum digging depth: 1240 mm 4'1" ● Maximum lift above ground: 950 mm 3'1"

* Measured with ripper point on ground and shank vertical.

Shoes

Shoes (optional) Additional weight Ground contact area

560 mm 22" single-grouser shoes 0 kg 0 lb 36680 cm2 5,685 in2

610 mm 24" single-grouser shoes +200 kg +440 lb 39955 cm2 6,193 in2

660 mm 26" single-grouser shoes +410 kg +905 lb 43230 cm2 6,700 in2

710 mm 28" single-grouser shoes +620 kg +1,370 lb 46505 cm2 7,208 in2

560 mm 22" extreme service shoes +460 kg 1,015 lb 36680 cm2 5,685 in2

610 mm 24"extreme service shoes +700 kg +1,545 lb 39955 cm2 6,193 in2

660 mm 26"extreme service shoes +940 kg +2,070 lb 43230 cm2 6,700 in2

Other● Air conditioner ● Cab heater and defroster● Engine side cover● Locks, filler caps and covers● Rear view monitoring system● Rigid drawbar● Tool kit

www.Komatsu.com Printed in Japan 201302 IP.AD

CEN00103-04 Materials and specifications are subject to change without notice.is a trademark of Komatsu Ltd. Japan.

HORSEPOWERGross: 268 kW 360 HP @ 1900 rpm

Net: 264 kW 354 HP @ 1900 rpm

OPERATING WEIGHT39500 kg 87,100 lb

Photo may include optional equipment.

● Air cleaner, double element with dustindicator

● Alternator, 50 ampere● Backup alarm● Batteries, 2 x 12V 170 Ah● Blower cooling fan● Color monitor● Decelerator pedal● Fenders● Horn, warning● Hydraulics for dozer● Hydrostatic steering (HSS) system

● Lighting system (includes 2 front, 1 rear)● Muffler with rain cap● Palm lever steering control● Radiator with reserve tank● Rear cover● Starting motor, 11kW/24V● Suspension seat● Track roller guard, end sections● Track shoe assembly

– Sealed and lubricated track● Underguards, oil pan and transmission● 560 mm 22" single grouser shoe

ROPS cab● Additional weight: 700 kg 1,545 lb● All-weather, enclosed pressurized cab● Dimensions:

—Length: 1735 mm 5'8"—Width: 1755 mm 5'9"—Height from floor: 1635 mm 5'4"

● Meets ISO 3471, SAE J/ISO 3471 ROPSstandards, and ISO 3449 FOPSstandard.

STANDARD EQUIPMENT FOR BASE MACHINE

OPTIONAL EQUIPMENT

D155AX-6

CR

AW

LE

RD

OZ

ER

D155AX